Physical Science Final Exam (A)

An object’s change in position relative to a reference point

• Motion

• Displacement

• Speed

• Acceleration

The change in position of an object in position of an object

• Motion

• Displacement

• Speed

• Acceleration

Which of the following is the correct equation used to solve for Velocity?

• V= D / T

• V= D x T

• V = F x A

• V = F / A

When is a car considered to be accelerating?

• When it increase speed

• When it decrease speed

• When it changes direction

• All of the above

How does friction affect the motion of an object?

• Friction is an unbalanced force that acts against the direction of motion

• Fiction is a balanced force that acts with the direction of motion

• Friction is an unbalanced force that acts with the direction of motion.

• Friction is a balanced force that acts against the direction of motion

What is the difference between the velocity and the speed of an object?  

• Velocity is the change in distance over time, while speed is the change in velocity over time
• Velocity has a direction associated with it, while speed has no specific direction.
• Velocity has no direction associated with it, while speed has a specific direction.
• Velocity is the change in speed over time, while speed is the change in distance over time.

Find the average speed of a train that traveled 540 km in 6 hours?

• 80 km/h

• 100 km/h

• 90 kn/h

• 3240 km/h

Find the velocity of a car that took 7 hours to travel 112 miles due south

• 784 mph

• 16 mph

• 20 moh

• 12 mph

Find the velocity of a train that traveled 420 miles northeast to northwest between two cities in 3.5 hours.

• 160 mph

• 120 mph

• 1470 mph

• 150 mph

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Tags

NGSS.MS-PS2-2